Apparatus for pressing glass.



lVl.` A. ROSS. APPARATUS FOR PRESSING GLASS. l

APPucATmN FILED Nov. s. 1914.

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M. A. ROSS. APPARATUS FOR PREsslNG GLASS.

APPLK/IATIO-N FILED NOV. 6. l9.\4.

Patented Aug. 10, 1915.

2 SHEETS-SHEET 2.

WEST VIRGINIA.V

A` APPARATUS F0155 PRESSING GLASS.

1,149,987. Specification of Letters LEatent.l A y l applicati@ flied November 6,1914.y

A Zb'aZZ'fw/iom t may concern:

Be it known that I, `MYiioN Ross', a

citi'zen of the United States, residing in J Morgantown, in thecounty of 'Monongalia, State of West Virginia, have invented new land useful Improvements in Apparatusl'for l, Pressing Glass, of which the followingis a specification, reference being had to the ac- 'Y companying drawings, in which FigureY 1 shows a plan Vview 'of the press- Y lingjportion of a .glassnmaking machine,

equipped with my improvementgFig. 2 is a sigue view ofthe apparatus ,shownl in Fig. 1,

partly in section; Fig. 3 is a 'detail view of the spring control of the `individiial dies;A

Fig. 4 is a view illustrative ofthe defects which I overcome by my invention; and

AFig. 5 is a view similar to Fig. 4, showing the .manner in whichv my invention overcomes the said defects. y v

'My invention relates primarily to an im- `'provement'in apparatus for making glass, applicable to such a machine as is shown inv United States vPatentl 661,024, to Ripley and `Wadsworth, in which the glass is first rolled on a flat table, and then ,is brought into lcontact with dies by wliiclrtlie surface of the iiat sheet of glass is vpressed into some special form. By my invention I .aim to provide means whereby a number of small dies may be advantageously used in connection with a single hat table, so that anumbei' of pieces of relatively small size may be pressed simultaneously.

As is now well known in the glass making art, when a sheet of molten glass is spread on a casting table, the heat of the Y glass transmitted to the casting table causes the vlatter to bow up at the center, sothat if a flat sheet of glass of large dimensions is brought against a hat die, the sheet of glass produced will be appreciably thinner at the center than at the margins. "For this reason it has been suggested that in pressing large sheets the table should be made concave, so that when expanded by the heat of the glass it will be practically flat, or that the die be concave, so that its surface willbe substantially parallel to the surface of the molten glass at the time the pressing operation is commenced.

When pressing small sheets of glass individually, the bowing of the table is not great enough to cause any serious diiiculty. however, small sheets are pressed simulratentedaug. 10,1915. serial states?. 'j i se of a singlefcasting e so arranged as to lie the curvature glass-on the casting. rouble'somepas if one pressed, as in Fig. 4 By my invention I aimy ereby each ofthe small adjust itself so that it ally parallel to the kmean ass which is to be pressed I make .a large press, in of. pieces of glass may be ngle operation, which is as combination of many small lisli this without procausing the siuface'of substantially parallel to the of the glass which is to be taneously, with the u table, andthe dies ar in a plane, I have fo large #sheet of 'ftable willjbe just as t 'largejsheet were being of the drawings. to provide means wh individual dies will will besubstanti surface ofthe gl jwhich a number produced by asi effective as the presses, and I a viding any means for each die tol be actual surfaceings in which y invention is shown, e, which carries the 3. a casting table, which into theV position shown` aplate ofglass has been the Ripley and The vertical is controlled through the plungers 7. able 3 is a dly extendtwo or more I-beams may s in the backn position iby which holes 13 are of the backing plate plate 8 maybe 9 Extending laterate S are lu rods 16, whic The rods 16 re provided it the downward plate 8 toward plate 8 is, howom the frame 2, n of the springs 16, and which are adjusted by means Referring ,now to the draw a preferred'form of m 2 represents a `'fram pressing apparatus; is adapted to move `in Fig. 2, afterv rolledon it as d Wadsworth Patent 661,024.

v ent of the casting table 3 ylinder 4, operating the army 6, and the above the casting t plate '8, having upwar 9, adapted to receive S10 and 1l. These into various position 9, and are held i means of bolts 12foi provided in the sidesf9 8. If desired, the bac strengthened by webs.y ally Vfrom th through wh screwed into the fra carry the backing with collars 16'r1 w movement of the backi the frame 2. T ever, free to move away fr subject to the compressio 17, which encircle the rod held in place an of the nuts 18;

In the face of the provided a number e. backing pl plate 8 and a he backing backing plate 8, are of holes`19, by means of which dies of various shapes and sizesfmay be attached to thebacking ratus equipped with three-sets of dies, which `.screwed into the die,

, of the apparatus.

are designatedby the letters A, B and C,

whereas thedies A and B being quitel small, the die C takes up about half of the surface dies to the backing plate each die isprovided with two or morebolt-s 20, which are j On Ithe top of each bolt a ring`21 is screwed, by means of the f i nut 21a. {Th'e'bolts 2O arei'freeto move in the j so lioles'19. In theapplication of the dies to 'Uthe machine `that/is shown' in 'the drawings, the diesff and B are each Vprovided with j two bolts 2O,` whereas 'the die ,'C,"being of -much larger dimensions, is 'provided with rfourfbolts 20.V "Pressingagainst the rings 21 are springs 22. The. upper ends of.' the springs 22 press against` rings '273, which screw onto bolts 24. vThe bolts 24 are adapted topress against the I-beams v10y and 11, which, as shown,` are to be positioned in aps propriate'lioles 13 in the sides 9.

To set upthe complete press, dies as'A, B and C vare attached to the backing plate 8 by the bolts 20, andthe nuts 21a are screwed down until the 'faces 'of all of the dies lie in a common'plane. The springs 22 are then put in Aplace with the rings 23 and thebo'lts 24. Above .the bolts 24 are placed the necessary I-be'ams as 10 and 11, which are fastened' to the sides 9 by bolts 12. The bolts 24 are then tightened until the springs 24which arene-ar themargin of the backing vplate .are undera lsubstantial pressure, and thosenearer thecenter are under aA less pressure. The correct adjustment of these springs can vreadily be obtained roman observation of a few trial sheets of glass. lllhen a 'proper' degreeoftension is obtained on the springs 24, the dies A, B and C will adjust themselves rto follow the mean surface l of the. glass with which they are broughtin contact, as shown in Fig. 5. In operatingthe press, when an equal pressure has beenexerted on .all of .the springs 22 this pressure will be transmitted tothe vbeams '10, and j through the sides9 and the lthat, may fbeused on the apparatus. A'consists of a bolt 25,

Inv attachingthe various :26, :which are respectively similar to the '28, carried on ay ro videdwith a nut 30, whichholds the'. collar 28 in place,

.means 'for applying planes of the said backingplate Sto `the springs 17,,whichI ,j

prov-ide to preventfany* breakage of the plate 8; Vrp invention as illustrated Ishow the .appa-v arts in case the sheet of glass is, as a whole, rolled too thick.

In Fig. 3 is shown an auxiliary means Jfor adjusting the pressure on any of the dies This provided with a collar bolt 24 vand the collar 23. In contact with the collar 26 ,is ajspringy 27, and the lower end of the spring 27 contacts with a collar d 29. The rod 29 is proand aty its lower end is adaptedto contact with a die as A. Itisl apparent 'that as the rod 29'is not screwed intor the die Aas many of these additional pressing devices asmay befnecessary can be quickly inserted back; of any portion of the die. j

Many variations may be made in the form of apparatus without spirit of my invention, since what I claim is:

1. In a .glass pressing apparatus the combination of a lbacking plate, a plurality of dies flexibly mounted on said backing plate, and cushioning means adapted to control the yplanes of the said dies in relation to the said backing plate.. f

.2.f In a glass pressing apparatus the combination of a backing plate, avplurality of dies lexibly mounted on said backing plate, yielding -pressures at sa`d dies to control the dies in relation to the said backing plate, and means for adjusting Vthe degrees of the said pressures. L

In a machine. for pressing a `plurality of glassarticles simultaneously, the combination of ya casting table, a backing plate various 4points. on

i movable in .relation to said casting table and a pluon said backing plate, yielding means for controlling the planes for said dies, and means for bringing the said dies and said casting table in pressing relation.

' MY'IRON A. ROSS.

4l/Vitnesses:

B h/I. S'rnMrLn, y Gr. R. CREEL.

i Copies of this patentimay be obtained "forve cents each, by addressing the "Commissioner of Patents.

- Washington, D561 departing from thev 

